package com.clj.cloud.authorization_server.oauth2.granter;

import java.util.LinkedHashMap;
import java.util.Map;

import org.springframework.security.authentication.AbstractAuthenticationToken;
import org.springframework.security.authentication.AccountStatusException;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.BadCredentialsException;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.oauth2.common.exceptions.InvalidGrantException;
import org.springframework.security.oauth2.provider.ClientDetails;
import org.springframework.security.oauth2.provider.ClientDetailsService;
import org.springframework.security.oauth2.provider.OAuth2Authentication;
import org.springframework.security.oauth2.provider.OAuth2Request;
import org.springframework.security.oauth2.provider.OAuth2RequestFactory;
import org.springframework.security.oauth2.provider.TokenRequest;
import org.springframework.security.oauth2.provider.password.ResourceOwnerPasswordTokenGranter;
import org.springframework.security.oauth2.provider.token.AuthorizationServerTokenServices;
/**
 * @author joe_chen
 * 短信验证码登陆与用户名密码登陆相似,密码为动态
 * 故继承ResourceOwnerPasswordTokenGranter
 */
public class MobileTokenGranter extends ResourceOwnerPasswordTokenGranter {


    private static final String GRANT_TYPE = "mobile";

    private AuthenticationManager authenticationManager;
    
    
    public MobileTokenGranter(AuthenticationManager authenticationManager,
            AuthorizationServerTokenServices tokenServices, ClientDetailsService clientDetailsService,
            OAuth2RequestFactory requestFactory) {
super(authenticationManager, tokenServices, clientDetailsService, requestFactory, GRANT_TYPE);
this.authenticationManager = authenticationManager;
}

    @Override
	protected OAuth2Authentication getOAuth2Authentication(ClientDetails client,TokenRequest tokenRequest){
		Map<String,String> parameters = new LinkedHashMap<>(tokenRequest.getRequestParameters());
		
		String username = parameters.get("username");
        String password = parameters.get("password");
        // Protect from downstream leaks of password
        parameters.remove("password");
        Authentication userAuth = new UsernamePasswordAuthenticationToken(username, password);
        MobileAuthenticationToken mobileAuthenticationToken = new MobileAuthenticationToken(userAuth);
		((AbstractAuthenticationToken) userAuth).setDetails(parameters);
        try {
			userAuth =this.authenticationManager.authenticate(mobileAuthenticationToken);
        } catch (AccountStatusException ase) {
            //covers expired, locked, disabled cases (mentioned in section 5.2, draft 31)
            throw new InvalidGrantException(ase.getMessage());
        } catch (BadCredentialsException e) {
            // If the username/password are wrong the spec says we should send 400/invalid grant
            throw new InvalidGrantException(e.getMessage());
        }
        if (userAuth == null || !userAuth.isAuthenticated()) {
            throw new InvalidGrantException("Could not authenticate user: " + username);
        }
        
        OAuth2Request storedOAuth2Request = getRequestFactory().createOAuth2Request(client, tokenRequest);
        return new OAuth2Authentication(storedOAuth2Request, mobileAuthenticationToken);
	}
	
	
}
